I had a similar glide cam with my HXR NX5e and it's just a matter of getting the weight balance to match your camera,then the front to back and lateral position to match, problem is once i set it up (took a while) i switched it on and flipped the screen out and that put it out of balance again! My mistake i never thought.
If you have the same model as mine HXR NX5e you may need to go to the gym because after 5 minutes it tends to get heavy. There is a belt/vest you can buy to help this..i think.